Late night television performances are usually reserved for artists promoting new music, but things are different on The Late Show With David Letterman right now. On May 20, David Letterman will retire from late night television, and this musical performance was a special one close to the host’s heart. Before Tracy went on, Letterman explained that this was one of the songs he loved as a child. She delivered a beautiful cover of the Ben E. King song, and Letterman seemed thankful. Watch above.